Security readout for executives and security teams
Plain-English summary
Adobe Experience Manager Forms can let an authenticated content author save malicious script into Forms component fields. When another user opens the affected page, that script can run in their browser. This can turn normal content publishing workflows into a compromise path for data theft or page manipulation.
Executive priority
Treat as urgent where AEM Forms is deployed. The issue needs authenticated author access, but successful abuse could affect other users’ browsers and sensitive sessions, including privileged workflows.
Technical view
CVE-2020-9741 is stored cross-site scripting in the AEM Forms add-on affecting 6.5.5.0 and below, and 6.4.8.2 and below. The vulnerability requires Author privileges and victim interaction. CVSS 3.1 is 9.0 with changed scope and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations running Adobe Experience Manager with the AEM Forms add-on at or below the listed versions are potentially exposed, especially where many users hold Author privileges or authoring content is later viewed by privileged staff or customers.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires a user with Author privileges to store malicious script and a victim to open a page containing the vulnerable field.
Researcher notes
The main exposure question is whether AEM Forms add-on is installed and within affected versions. Evidence provided does not include exploit availability, observed exploitation, or exact fixed build details beyond the Adobe advisory reference.
Mitigation direction
- Identify AEM instances using the Forms add-on.
- Compare Forms add-on versions against 6.5.5.0 and 6.4.8.2 thresholds.
- Use Adobe APSB20-56 to confirm vendor update guidance.
- Apply Adobe-recommended security updates after staging validation.
- Restrict Author privileges until remediation is complete.
- Review authored Forms content for unexpected script content.
Validation and detection
- Inventory AEM Forms add-on versions across all environments.
- Confirm whether affected Forms components are present on public or internal routes.
- Review authoring access lists for unnecessary privileged users.
- Test patched staging pages for safe handling of script-like input.
- Check content repositories for suspicious recently authored form fields.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-9741 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H2.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/experience-manager/apsb20-56.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.